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CVE-2026-118194— Page and Post Restriction <= 1.6.1 - Unauthenticated Authentication Bypass via REST API Nonce Bypass via Cookie Re-Authentication

Quick assessment

Affected
cyberlord92 Page and Post Restriction
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的"Page and Post Restriction"插件在所有 1.6.1 及更早版本中存在认证绕过漏洞。该漏洞源于 函数（已钩入 ）：对于当前用户 ID 为 0 的任意 GET 或 HEAD 类型的 REST 请求，该函数会通过 Cookie 调用 重新认证当前用户，且未验证 REST 令牌（nonce）。这一行为悄无声息地撤销了 WordPress 核心函数 对缺少 请求头或 参数的 Cookie 认证请求所执行的"nonce 清零”保护机制。 结合 WordPress 对 REST A

CVSS 6.5 · Medium EPSS 0.34% · P28
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I. Basic Information for CVE-2026-118194

Vulnerability Information
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Vulnerability Title
Page and Post Restriction <= 1.6.1 - Unauthenticated Authentication Bypass via REST API Nonce Bypass via Cookie Re-Authentication
Source: CVE Program / CVE List V5
Vulnerability Description
The Page and Post Restriction plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.6.1 This is due to the `papr_restrict_page_post_rest_api()` function, hooked on `rest_pre_dispatch`, re-authenticating the current user from the `wordpress_logged_in` cookie via `wp_set_current_user()` for any GET or HEAD REST request where the current user is 0, without verifying a REST nonce — silently undoing the nonce-zeroing that WordPress core's `rest_cookie_check_errors()` performs on cookie-authenticated requests that lack an `X-WP-Nonce` header or `_wpnonce` parameter. Combined with WordPress's permissive REST CORS behavior — which echoes the request `Origin` and sets `Access-Control-Allow-Credentials: true` — this allows an unauthenticated attacker to read REST API GET responses as a logged-in victim, exposing role-restricted and private post/page content, victim user profile data via `/wp-json/wp/v2/users/me`, and comments the victim is authorized to see. This requires the attacker to lure a logged-in user into visiting an attacker-controlled page that issues credentialed cross-origin `fetch` requests against the target site's REST API; no nonce or further victim interaction beyond the page visit is needed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cyberlord92 Page and Post Restriction 0 ~ 1.6.1 -

II. Public POCs for CVE-2026-118194

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III. Intelligence Information for CVE-2026-118194

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Vendor Pages for CVE-2026-118194 (2)

IV. Related Vulnerabilities

Same product: Page and Post Restriction
Same vendor: cyberlord92
Same weakness: CWE-287